The 30-year old has committed the rest of his career with the Rhinos, having only ever played for the one club throughout his 14-year career.
Jones-Buchanan said: “It has always been a privilege to play for Leeds Rhinos and by agreeing a new long term contract, my intention is to finish my playing days here and only ever play for Leeds.
“The novelty of pulling on a Rhinos shirt and playing at Headingley Carnegie has never worn off for me. Hopefully I can have three more good years and bring home some more silverware and then I can assess where my body is at and whether I can go on.
“We have got a lot of young lads in the squad now and they inspire the older guys to keep striving for more. We want to win the Challenge Cup and retain the title, every professional wants to win everything on offer at the start of the season but we certainly have some goals that we still want to achieve.”
The England international has played in all five of Leeds’ Grand Final wins, and has admitted the urge to carry on playing came from his captain, and a former Leeds star.
He said: “I have spoken to Jamie Peacock and Adrian Morley about playing on in your 30s, and both of those guys are as good as they ever were so I am not ruling anything out. However, I have always said I will play for as long as I am wanted and the coaching staff feel I can do a job for the team.
“I am greedy for success, all the boys are. That is the funny thing about when you win those big games, you want more of that and you won’t settle for anything else, it drives you on.
“We have won lots in the last decade but we have got the Heinz Big Soup World Club Challenge against Manly now on the horizon and we owe them one after they beat us at Elland Road a couple of years ago.”